Walnut, IL Radon Levels
Check local Walnut radon levels and find certified testing and mitigation professionals to keep your home safe
Walnut, IL Radon Facts
Situated in Bureau County along the Illinois River valley (ZIP 61376), Walnut has recorded an average radon level of 5.0 pCi/L based on initial testing data. This reading exceeds the EPA's recommended action level of 4.0 pCi/L, reflecting the area's alluvial soils over Ordovician limestone that characterize this region. Given Bureau County's variable radon conditions and the community's geological setting, all residents should prioritize radon testing and mitigation when necessary.
Based on 1 user-submitted radon test for homes in Walnut, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Walnut, IL Radon Mitigation
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Walnut, IL Radon Levels
User-submitted radon test readings from homes in the Walnut area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Walnut, IL | 0-20 Years | Full Basement |
Have a radon test result for Walnut? Submit your reading to help other homeowners.
Radon Readings Near Walnut, IL
Compare radon levels in Walnut with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Princeton | 15.4 mi | 11.50 pCi/L | 2 |
| Rock Falls | 16.3 mi | 6.00 pCi/L | 2 |
| Amboy | 17.7 mi | 5.00 pCi/L | 1 |
| Annawan | 18.5 mi | 10.00 pCi/L | 1 |
| Dixon | 22.2 mi | 14.00 pCi/L | 2 |
| Spring Valley | 25.6 mi | 2.00 pCi/L | 1 |
| Kewanee | 26.4 mi | 8.00 pCi/L | 1 |
| Peru | 28.8 mi | 6.50 pCi/L | 2 |
Bureau County Radon Profile
Because of its underlying geology, Bureau County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 3 cities in Bureau County average 7.50 pCi/L across 4 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Bureau County home regardless of zone or a neighbor's results.